First try Kannabia seeds - Colombian Jack

Hello mates, welcome inside Colombian Jack's fourth week of vegetation. In my first plan i had to do only 3 week of vegetation but the problem with Ca caused a generic slowdown in the growth of the plants so i added this week to have more time trying to fix the situation. Despite i finally had a rigth rate of Ca/Mg, one week after i saw again bad signs of Ca defiency in the lower leaves. More of that during this week Colombian didn't stretch a lot, she developed more the leaf structure than the elongation. Considering her condition i decided to do a bit of pruning and a big defoliation to let the ligth hit the smaller branches hoping this will help her vertical growth. Environment info: Average T - RH : 25°C - 71% Average VPD: 0.91kPa Tmax - Tmin: 26°C - 23°C RHmax - RHmin: 78% - 66% Light schedule: 1 LED 60% 100W - 18Hr on / 6Hr off - 70cm from the plant 1 LED 60% 100W - 18Hr on / 6Hr off - 70cm from the plant Feeding: BioEnhancer: 1g/L Water info: Base water with 4:1 ratio (demin:tap water) with 0.02 (g/Ltapwater) epsom salts added to balance Ca/Mg rate on 5L T: 23.6°C - ppm: 103- EC: 0.2 ms/cm- pH- 7.2 15/10: Water + Bio-pH-: 1 L T: 23.4°C - ppm: 103- EC: 0.2- pH: 6.2 17/10: Water + BioEnhancer 1 g/L + Bio-pH-: 1.5 L T: 23.6°C - ppm: 200 - EC: 0.4- pH- 6.3 19/10: Water + Bio-pH-: 1.5 L T: 23.4°C - ppm: 103- EC: 0.2- pH: 6.2